2165738 has 8 divisors (see below), whose sum is σ = 3324288. Its totient is φ = 1057644.

The previous prime is 2165711. The next prime is 2165741. The reversal of 2165738 is 8375612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12506 + ... + 12677.

It is an arithmetic number, because the mean of its divisors is an integer number (415536).

2^2165738 is an apocalyptic number.

2165738 is a deficient number, since it is larger than the sum of its proper divisors (1158550).

2165738 is a wasteful number, since it uses less digits than its factorization.

2165738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25228.

The product of its digits is 10080, while the sum is 32.

The square root of 2165738 is about 1471.6446581971. The cubic root of 2165738 is about 129.3804445109.

The spelling of 2165738 in words is "two million, one hundred sixty-five thousand, seven hundred thirty-eight".